shipe



(No Model.)

. W. S. SHIPE. MACHINE FOR FORMING R0 6 SheetsSheet 1.

LLED LONGITUDINAL JOINTS IN CYLINDERS.

' Patented Nov. 7,1893.

7%??(633 6.3 I (Tor /MN/M nnnnnnnnnn NY nnnnnnnnnnnnn c.

Q 6 Sheets-Sheet 2.

- (No Modl.)

W. vS. SHIPE. MACHINE FOR FORMING ROLLED-LONGITUDINAL JOINTS IN CYLINDERS.

Patented Nov. 7, 1893.

[VET/(61313388 (No Model.) 6 Sheets-Sheet 3.

W. S. SHIP E. MAOHINE FOR FORMING ROLLED LONGITUDINAL JOINTS IN CYLINDERS.

No. 508,350. Patented Nov. 7, 1893.

nnmmu a a l [19.11 Wl I hf'wfol m: mmonm. unaoampnma comuuv. waanmsron. n. c.

(No Moql.) 6 Sheets-Sheet 4.

W. S. SHIPE. MACHINE FOR FORMING ROLLED LONGITUDINAL JOINTS IN CYLINDERS.

NO. 508,350. Y Patented, Nov. 7, 1893.

[VET/(e33 Q8 Menfior (No Model.) 6 Sheets-Sheet 5.

W. s. SHIPE. MACHINE FOR FORMING ROLLED LONGITUDINAL JOINTS IN GYLINDBRSI No. 508,350. Patented Nov. 7, 1893.

Wi'G zess e3 r lio enior /QQ. y/bw/Jfifm w (No Model.) 6 Sheets-Sheet 6.

W. s. SHIPIL. MACHINE FOR FORMING ROLLED IONGITUDINAL JOINTS IN CYLINDERS. N 508,350. Patented Nov. 7-, 1893. I

fig. .9

W (M61513 e3 1% Vi 60/" @d. M 24% M 7/ 2%.

I UNITED TSTAT S PATENT OFFICE.

in the Province of Ontario, Canada, have in- Cylinders, of whichthe following is a specifisaid longitudinal joint may be formed by ally compress the jointing strip'substantiall y fiush with the outer surface of the boiler, the

' proved rolling machine.

- rods.. Fig. 5, is a detail of the belt shifter.

swaging rollers immediately over nion with the boiler in posit-ion.

viously done by a after the boiler is finished. Fig. 11, is a cross WALTER s. SHIPE, OF TORONTO, CANADA.

MACHINE FQR FORMING ROLLED LONGITU DlNAL JOlNl'S IN CYLINDERS.

SPECIFIGA'IXON forming part of Letters P Application filed April 4, 18 92.

To all whom it may concern: I r Be it known that I, WALTER Soorr SHIPE, of the city of Toronto,in the'county of York,

vented a certain new and Improved Machine for Forming Rolled Longitudinal Joints in cation. v

The invention relates to improved means for making a longitudinal joint, patented by me in the United States on the 9th day of June, 1891, and in Canada, on the 15th day of September, 1891, which consists of a T-iron strip placed between the edges of the sheet to'loe joined, the portion of the strip projecting between the edges being compressed or riveted down substantially flush with the outer surface of the cylinder which was prehammer, and the object of the present invention is to provide a light and quickly operating machine by which the swaging rollers, and it consists, essentially of a light mandrel providedwith suitable clamping devices designed to rigidly hold the boiler with its jointing strip in position, the said mandrel being driven by mechanism by which it derives a quickreciprocating motion so as to bring the jointing strip below swaging rollers automatically operated so as to graduwhole being constructed in detail substantially as hereinafter more particularly explained.

Figure im- Fig. 2,is an enlarged end view of the driving gear. Fig. 3,-is an enlarged detail of the trip by which the brake is applied. Fig. 4:, is a detail showing the means for connecting the two belt shifting l, is a perspective view of my Fig. 6, is a cross section of the machine through x, y, Fig. 9. Fig. 7, is a front view of the feeding mechanism. Fig. 8, isa back view of the machine. Fig. 9, is a sectional view of the the trun- Fig. 10, is a detail in section showing means by which the joint strip is forced out of its recess atent No. 508,350, dated November '7, 1893.

serial No. 4271730- (No model-l v In designing my'machine for swaging down the rib by which the longitudinal joint is formed, I havekept in view the fact that it is necessary that thevmachine should be constructed light enough to be able to be worked at a high speed and at the same time be sufficiently strong to resist the intense strain that it will be called-upon to stand during the swaging of the metal forming the joint.

In the machine, as illustrated, I have arranged that the swaging tools shall be connected to the stationary frame of the machine,while the mandrel on which theboiler is placed is operated by machinery arranged to impart to it a reciprocating motion designed to bring all parts of the joint in contact with and so as to be acted upon by the said'swaging tools, belt shifting devices being provided by which one belt is removed entirely clear of the driving pulley before the reversing belt is moved toward the said driving pulley. It will of course be understood that a great many points in the construction of the machine might be retained while making the portion of the machine which carries the boiler stationary and the portion of the machine carrying the swaging tools reciprocating.

For the purpose of this specification, I propose to first describe the mechanism by which the longitudinal movement of the boiler carrier 'or mandrel .is imparted; secondly, the means by which the momentum of the stroke is checked before reaching the end of the stroke when the machine stops for the boiler to be put on or removed; thirdly, the belt shifting mechanism; fourthly, the clamping mechanism by which the boiler is secured in position, and fifthly, the swaging :tools and mechanism for operating the same.

A, represents a T-headed beam, on the end of which a leg B, is formed. This leg B, is bolted to a leg 0, formed on the beam D, on which latter beam a rack D is formed. The

on a suitable rail, as indicated. The bolts which connect the legs B, and O, are carried through oblong holes in order that the beam A, maybe adjusted vertically to compensate for wear in the working parts of the ma:

section of the saddle on which the boiler rests.

chine. The rack D, meshes with the pinion F, which is keyed to the same spindle as the beam D, is supported by the truck E, carried IOO worm wheel G, (see Fig. 2). This worm wheel meshes with a worm H, formed on or connected to the driving shaft I. It follows, therefore, that the revolving of the driving shaft I, imparts a longitudinal movement to the beam A. As the speed at which the beam A, travels will be necessarily quick, it isrequisite that means should be provided by which its motion shall be checked and stopped when the beam A, is thrown to the full end of its stroke to receive the boiler, as hereinafter explained.

Onreference toFigs. 1, 2 and 3, the mechanism will be understood. -The'd'riving shaft I, with its worm H, is journaled in a casing I, and has a disk J rigidlysecured toits end, as shownin Fig. 2. Another diskK is'fitted on said shaftpbut is arranged to loosely fitthereon and hasa cam-shaped portion S on its end,-which acts against asimilarly reamon the end of thee-asing 1-, the purpose of which will-be-herei nafterdescribed. Anarm L, projects from the disk Kyand extends over-the latch O. A setscrew N, is -screwe'din t'heend of the'bar -L,and normally rests upon the latch O, which is pivoted on'the bracket P, extending from the hous- 'ing'Q. A-push platoR, is placed on theibar M, at a point which will reach the latch O, justbefore the boiler carrier has reached the end of its stroke. The push plate R, is shaped --sotlrat itstrikes andrpushes aside -the latch 0,'-clearof the-set screw N, thus permitting shaft is reversed, the arm distance byfrict-ion between the disks (due the -arn1*L, to fall, and owing-to the cam S,

formed on the back of the disk K, (see Fig.2) the-said disk is-jammed against-the disk J,

so-as to check the speed of the driving shaft I-and'stop it, at which period both belts will be ofi-the driving pulley. When the driving L, is raised a short tothe frictional-surfaces shown at K)* and permits the latch O, to be thrown backbyits spring beneath the set-screw-N. This setscrewisprovided sothat the fall-ofthearm L, may be easily regulated.

On reference to Figs. 1, 2, 4, and 5, the construction and operation of my improved belt shifteriwill be-understood. Thetwo'rods T, and U; are independently supported at one end by thebrack'et V, which extends from the mainframe of the machine and has suitable bearings in it whichsupport the rods T, and

U, andpermit them tomove longitudinally in the said bearings. The opposite end of eachrod T, and U, is connected to an independent slide W, and X, carried in a suitable bracket Y, supported on the frame of the ma- -chine, as indicated in Fig. 1. On the bottom ofthebracket Y, I- pivot the belt-shifters Z,

andZyeach belt shifter having a crank formed onits pivot end from which a pin Y,

.projectsthrougha slot ingthe bottom of the bracket Y, intothe slot W, made in its respective slide.

In Fig. 5, the belt shifters are shown in the position they will appear when the shifter Z,

is fixed to and extendsfromthewbar is on the belt which at the time is driving and the shifter Z, on the loose pulley belt. It will, of course, be understood that these belt shifters Z and Z operate the belts z 2, which belts drive the pulleys z in a manner well understood. Assuming that both rods T; a'ndU, are connected together, the pins Y, are located in their respective slots W, in such a position that the simultaneous move ment of the slides W, and X, will cause the belt shifter Z, controlling the driving belt for the time being tomove first and after it the belt shifter'Z, controlling the belt on the loose pulley. Consequently the belt on the tight pulley is first removed before the belt running in the opposite direction is 'thrown'upon the drivingpulley.

In order that-the-belt shifting maybe-accomplished automaticallglip'lace two adjustable stops T, "o'none of the rods 'Tyor Urand between the two stops Lp-lacean-armSfwhich M, or other reciprocating portion of the machine,

and I connect the two rods :Tfand-U, together by a link V wh'ichis pivoted on" one rod and designed to engage'with the other, 'as' shown in Fig. 4-

When' the wmand rel-with 1 its clampi'ngidevices is to be run out to the end of the stroke, as hereinafter explained l disconnectt'hetwo rods T, and U, byra-ising the link- V clear of the one it is engagedwith, and as the slides W, and X-,are independent 'of'each other'and are independently connected to their respective belts, the rod which: controls the belt at the time driving, may be readily! adjusted. at

the proper timeto arrest the-motion of-the machine as it approachesthe end of thestroke onto its loose pulley, thereby leaving the-mandrel free to move by its own'moment'um; and itis at this'time that the braking mechanism hereinbefore described comes-into action.

On reference to Figs. -1s and- 6- the manner in which the boiler is clamped-onto what I mandrel' and which I have before referred' to-iirthespecification as beamAywill be "understood. A saddle piece a, isvplacedon top 'of'the'beam A, and is shaped as indicated 'in--Fig.'6,*to correspond in shape with the interior-of the boiler b, which when'inserted'in position, as hereinafter described, rests :upon: it," as indicated'in Fig. 6. On-each side of the'saddle piece a, I .place a clamping pie'ce d; which corresponds in length with the saddlepiece a, and is intended to act in conjunctio'nwith the said saddle piece, as hereinafter explained, to clamp the boiler against the said saddle piece. e, represents a jacket made the sameshape and length as the boiler. 0n-reference to .Fig. 6, it will be noticed that each edge-of the jacket e, is fitted over the inneredge of the clamping pieces d, to'which clamping pieces the respective edges are riveted orotherwise securely fastened. A heavy head f, is bolted or otherwise powerfully secured to the housing g. On each side of the headf, I

. soaeso carry in suitable adjustable boxes h, vertical rollers '41, designed ,to act against the'clamp- 'ing pieces d, for the purpose hereinafter explained. In the drawings, I have shown bushin stri s d on the clam in iecesto receive approach each other, and when revolved in the'other direction,to move apart.

Onreference to Fig. 6, azpair of rollers k, will be seen. These rollers are situated in the'centerof the head f, and are designed to act against thetop of 'the. clamping pieces m, hereinafter referred to. The rollers k, are

. carried by eccentric spindles 'n, so that by turning the said spindles, the rollers k, may

be raised or lowered as occasion may require. Each spindle is provided-on its inner end with a shoulder n. and with a pin and set-' screw 19, on its outside by which the said spindles may be adjusted and held by friction at any position desired. Under each roller 7.0, I place a strip of metal q. 7 The foregoing constitute all the parts by which the upper portion of the boiler is held 8, being placed inside'the hollow beam asin position and operated as hereinafter ex-v plained, and the following constitute the parts by which the lower portion of the boiler is h ld i v r, isahollow beam which fitsloosely t-hebeam A, and is adjustably connected thereto by set screws or otherwise. i This hollow beam is intended to fill the space between the bottom of the beam A, and the boiler 12, lining pieces shown in Fig. 6. 'By providing the hollow beam 7', with lining pieces s,I am enabled to readily and easily fill different sized boilers and thus form a solid mandrel on which the joint'may be rolled, as hereinafter-specified.

Immediately below the-, head f, I place a trunnion carried by a blocktt. This block it, is detachable so that it maybe easily removed and a higher or lower one substituted so as to suit the size of boiler to be acted upon. On top of the trunnion t,'I place a heavy bar 12, which fills up the space between the top of the trunnion t, and the bottom of the jacket e, which is seen red to the bar 1; and encircles the boiler b. The other end of the bar o is connected to and supported by the leg B, as shown in Fig. l, oblong holes being made in the said leg, as indicated'in Fig. 1,'so that the bar 1;, may have a slight vertical movement for the purpose hereinafter explained.

In order to support the clamping pieces 01, I provide at one end of the bare, a pair of links w (only one of which is visible in the drawings) supported by ahorizontal pin projecting through the bar 'v,'at one end, the said links being detachably connected to the clamping pieces (1, at their other ends. The

links 10, are movable on their su'pportingpin :r, so that when the clampingpieces d, are not acted upon by the rollers '6, they may. be moved apart, which movement is efiected by the natural outward spring of the jacket e In'order to assist this outward spring, and help to support the weight of the clamping pieces (1, I place at the other end of the jacket a pair of spring bars y, shown by dotted lines in Fig. 1., which are connected to the clamping pieces d, and are set to eifect the purpose desired.

Having now described the parts by which the boiler is secured to its mandrel, I shall proceed to'explain how the said parts are manipulated for-securing the desired end. The first thing I do is to run the mandrel out, of the machinethat is to say, to run it past the center of the head f, so that the s'tripsq, shall be past the rollers It, thus leaving the clamping piece m, free to be raised sufficient to permit the insertion of the boiler. The clamping pieces d, will also be clear of the back rollerst', while the front rollers 't', whichare visible in'Fig. l, are adjusted apart by turning their spindles j. Thus the clamping pieces d, will spring apart and the jacket e, open so as to permit the insertion of the boiler, the bar 1;, having fallen down by the recess 12, coming opposite to the trunnion t. When the mandrel is run out to the full extent for the purpose of receiving the boiler, I prefer to provide a temporary support of some kind to carry the bar V, and clamping pieces, connected toit. On reference to Figs. 1 and 2, the means by which the mandrel itself is supported will be understood. On each side of the pinion F, I place a plain roller 19, which projects between the beam D, and the bar M. Consequently when the mandrel is run out to its full extent, any tendency to tip over. is arrested by the beam D, coming in contact with the bottom of the said'rollers 19. In order to raise the top clamping pieces m, I connect them together at their outer ends and pivot on them a lever 20. This lever is fixed to a spindle which is journaled in the clamping piece m, and has a foot fixed to its opposite end (not seen in the drawings) similar to the foot 21, formed on the end of its lever 20. The feet 21 operated by the lever 20 act against the clamping piecesd, and thereby the top clamping piece is elevated. Before vputting the boiler in position, I insert vthe T- shaped strip w, into a groove a made in the saddle piece a, (see Fig. 6) which abuts IIO against the stationary stop 2, and is held between it and the endwise movable stop 2', at

the opposite end ofthe recess, the strip w, 7

being placed between the said stops, so that the strip w, cannot expand lengthwise when being swaged, as hereinafterspecified. The boiler to be jointedis then slipped into the "jacket e, and adjusted so that its edges shall be brought against the rib of the T-shaped strip w, after they are compressed by the forcing 'together'of the clamping pieces d. I

may mention here that the rollers 75, are ad- 'justed to suit the thickness of the metal forming the boiler and when once set to suit the gage of the metal, the set screws 19, are socured and the eccentric spindle n, locked until boilers of adilferent gage are tobemanuv factured. When the boiler b,is-p1aced in-po-I sition, the machine is put inoperation, and

the swaging tools, which'I shall now proceed to describe, are put into action.

On reference toFigs-l, 6, 7, 8 and 9,the construction and operation of my" swaging tools will be understood. In the'center of the headf, immediately overthe strip to I place a double disk'2, in which disk 'I- journal the rollers 3, which constitute the swaging tools. The spindle 4, on which i the" disk 2,*is journaled, is eccentric in shape; so that when the spindle 4 is'revolved, the said disk2 israised orloweredasrequired. "Inthe drawings I haveshow n only three swaging'rollers 3, but

of course more orlessmay beused as require'd. As indicated in Fig. 6, the first roller is shaped so as to force down theedges of the boilerintoithe recess made in the stripw', and the other rollers or swaging tools are shaped to swage down the center rib of the strip w. Of course this strip, or themanner in which it is employed for the-purposeof making this joint does not form anyportion of my present invention, which is merelyfo r a'machine to make the joint by rolling or swaging the strip.

On' reference to Fig. 8 which shows the back of the head f, it will be observed that an arm 5, is fastened to the spindle4, whicharm, when the spindle 4 is revolved, comes in con-' tact with the lever 6 which is fixed to the same spindleras' the hook 7 (see Fig. 9) which hook is intended toengage with one ofthe-pins' 8, in the disk 2,as indicated in Fig. 9. When it isdesiredto adjust the disk 2 soas 'to bring one or other of theswaging tools 3 in position toactupon the joint,I' revolve the spindle 4, which brings the arm 5 against the lever 6 and as the latter is connected by its spindle to the hook 7, the said hook israised clear of the -pin8 with'which itmayat the tim eWbeiengaged. Simultaneously with the raising of the hook 7, the disk 2 is raised, owing. to theeccentric-shape of the spindle 4. Therelativepositions of the pins 8 are such that when'the hook 7 is gripping one of the pins 8, one of the rollers or swaging'tools 3 willbe held immediately belowthecenter of the spindle 4 in position ready to act upon the, joint of the boiler.

The center line through the full throw of the eccentric shouldbe horizontal when the swaging tool is in-position readyto commence working.

We will assume that the machine is in op :eration andthat the boiler is being carried backward and forward under th'e swaging tool, shown in Fig. 9, and as it is necessaryin order to accomplish the purpose of the said swaging tool that it should begradually fed down at each stroke of the machine, I provide mechanism by which the necessary feed maybe automatically and-'effectuallyaccomflplished, and the construction of this automatic feed will be understood on reference to Figs. 1, 6, and 7.

V 9, represents a wheel which is' fixed to-the ratchet teeth (when its periphery. Each set "of ratchet-teeth, being madeat a different pitchso that-theffeed, which is operated "as hereinafter explained; may be fineor coarse to' suit the classand weightof, iron to be succeeding stroke. In'practiceIhave found that the *gradual reduction-bf the pitch of 'the ratchet teeth is "not in itself s'u'fliciently slow, and I, therefore, ashefore explained, set the spindle 4, sothatthe center line through the full throw of the. eccentric is hori'zontal when the swaging tool commences to work. Consequently the downward feed of the swaging roller bythegaction'of the revolving of the'eccentric 4, is greatestas the center line of the eccentric leaves the horizo'nt'al and gradually reduces as the center line of the eccentric assumes the perpendicular.

On reference toFig. 7, it will be observed 1 that the pawl 1 0, 1 which engages with the ratchet teeth, as'indicated is pivoted on an arm 11,-pivoted 011 thehead f, and actuated by a springl2, which supports thepawl end of the arm 11, as, shown. {In order toprevent the spring 12. throwing the arm 11, higher I than desired, 1 provide an a'djustable plate 13,which butts against the bar 14, as shown in Fig. 7. By the adjustment of theplatel3,

. the projection15, on the arm 11, maybe per- 'mittedto enterthe notchin the bar 14, more or losses desired to suit the ratchet section thenin use andprevent-more than onetooth being taken at a time. I It willof course be understood. that the feeding T down "of the swaging tools must take place when theboiler is clear of the swaging'tool. It is, therefore,

necessaryto arrange the stops bywhich'the belt-shifting apparatus is regulated-so that the boiler shall be carried about twoorthree inches past the swaging tool at each end of the machine. At this point, the stopsby which the feed is operated are brought into action so that the spindle4, shall .be revolved the required distance immediatelythat the boiler has passed the swaging tool at "that time in operation. As the stop is a rapid one,

the ratchet wheel would revolve more than I therefore provide on the end of the arm 5 (see Figs. 6 and 8) a set-screw 18,- having on its end a piece of leather or-other suitable material to produce'friction, and it is by the tightening of this set-screw against the head f, that the spindle 4, is prevented being revolved byany sudden jar or quick motion of the pawl operating the ratchet wheel.

Imay add to whatl have already said, that the reason I commence the feed at the coarsest teeth of the ratchet and the travel of the eccentric of the spindle at its quickest movlng polnt is, in order that the feed shall be slower and slower as the joint nears completion- As shown in Fig. 1, the bar 14, is connected to a rod 16, which is suitablycarried on the frame of the machine and is provided with two stops 17, one on each side of the arm S, which moves with the reciprocating portion of the machine, as before described. At each stroke of the machine, the bar 14 is moved so as to make its notch pass over the projection 15. and thus force the arm 11 down sufficiently far to move by the pawl 10 the ratchet wheel 9 a single tooth, and in this way the spindle 4, 1s. revolved so as to move the swaging tool down ready for the next stroke.

, On reference to Figs. 10 and 11 the means -by which the strip to, is removed will be understood. l I

Fig. 11, is a side-view of the endwise movable stop e, which stop, with the stop z, at

.the opposite end of the groove prevents the strip to expanding lengthwise during the process of swaging. In order toremove the strip w it, becomes necessary to first slide the stop a! transversely of the mandrel by any suitable. means so as to bring the slot 22 in it opposite to the end of the strip to, shown by Y dotted lines in Fig. 11. The strip w, must then be knocked out of its recess a, which is accomplished in the following manner:

On reference to Fig. 10, it will-be observed that there are three pins 23 projectingthrough holes made in the saddle piece a, immediately below the recess a and below these pins in a recess made in the beam A, I fit a bar 24 having its surface cam-shaped below each pin 23, so that the longitudinal adjustment of the bar 24, shall force the pins up vertically so as to push the strip w, out of its recess and clear the stop 2', the cam on the bar 24 which acts on the pin 23 nearest to the stop 2 being shaped so that after forcing up the pin so as to completely clear the strip w of the stop .2, and allow the stop 2', to be moved, it permits the said pin to drop back again so as to permit the strip w, to drop loosely back while the boiler is being pulled 01f the mandrel.

I have shown and prefer to have the parts carrying the boiler movable and the swaging parts stationary when in operation, butas before stated these conditions may be reversed,

and when in my claims I mention a reciprocating mandrel, or means for reciprocating the same combined with a stationary swaging device, I mean to include thereby reciprocating swaging devices and a stationary mandrel, as I consider such an arrangement of these parts as being a mere reversal, not requiring inventive ingenuity, and within the spirit of my invention.

What I claim as my invention is- 1. A reciprocating mandrel provided with clamping mechanism arranged to rigidly hold the edges of a longitudinal joint of a' boiler against a T-shaped strip placed between its edges, in combination with a swaging roller suitably supported and provided with mechanism by which said swaging roller is gradually fed against the T-shaped jointing strip, substantially as and for the purpose specified.

2. In a machine for rolling the longitudinal joint of .a boiler and in combination with a swaging device, means for holding the boiler in position, a truck, a beam supported on said truck and adjustably connected to said boilerholding means, a rack formed on said beam, a pinion engaging with said rack, and means for operating said pinion, thereby operating said boiler holding means and beam, substantially as and for the purpose specified.

3. In a machine for rolling the longitudinal joint of a boiler and in combination with a swaging device, means for holding a boiler in position, a truck, a beam supported on said truck and adjustably connected to said boilerholding means, a rack formed on said beam, a pinion engaging with said rack, means for operating'said pinion, a bar having a connection with said boiler-holding means and a .roller fitted on the spindle of said pinion and arranged to fit between said bar and beam,

substantially as and for the purpose specified. 4. In amachine for rolling the longitudinal joint of a boiler, a mandrel provided with means for holding a'boiler in position and having a T-shaped base'and arranged to substantially correspond with the interior of a boiler which it is designed to support, a U- shaped beam placed under said T-shaped mandrel, and a lining piece between said mandrel and beam, substantially as and'for'the purpose specified.

5. In a machine for rolling the longitudinal joint of a boiler, and in combination 'with a mandrel suitably supported and shaped to correspond with a boiler which it is designed to support, a jacket arranged to partly encompass the boiler, clamping pieces attached to said jacket and means, substantially as described, for forcing said clamping pieces together to compress the boiler, substantially as and for the purpose specified.

6. In a machine for rolling the longitudinal joint of a boiler, a mandrel, comprising a T-shaped beam having a saddle-piece placed on its head, and shaped to substantially correspond with the interior of a boiler which it is designed to support, in combination with a jacket arranged to partly encompass said boiler, clamping pieces attached to said jacket, means, substantially as described, for forcing said clamping pieces together, a second set of clamping pieces arranged substautially over said saddle piece, and means, as the rollers arranged to depress the last named clamping pieces, substantially as and for the purpose specified.

7. In a machine for rolling the longitudinal joint of a boiler, and in combination with a reciprocating mandrel, spindles n eccentri-,

cally journaled in a suitable casing, rollers 70 carried by said spindles, clamping pieces m acted on by said rollers, a collar fixed to each spindle behind the roller, a set-screw bearing on the casing and a pin connected with the spindle and arranged to receive said setscrew,substantially as and for the purpose specified.

8. Inamachine for-rolling thelongitudinal joint of azboiler, a mandrel, comprising a T- shaped :beam having a saddle-piece placed .onaboiler,. a bar oconnectedtorsaid jacket, a recessrmadetherein, and .a roller arranged to support .said bar 11, substantially as described.

10. A, mandrel suitablysupported and hav-' ing arsaddle-piece a, a groove made in .said saddlespiece to receive a T.-shaped strip, and

astop .e-placed at one end of said groove and against which said strip butts, in combination withan endwise movable stop 2 located at'theend of the groove opposite the stop .2,

substantially as and for the purposespecified.

'11. A reciprocating mandrel providedwith clamping mechanism arranged to rigidly hold the edges of a longitudinal joint of a :boiler against a T=shaped strip placed between the said edges, a roller arrangeditotorm a stationarysolid support for themandrel, and a swaging roller located immediately over the supporting roller and provided with mechanism for feeding it down upon the stripat each stroke of the mandrel, substantially as and for the purpose specified. 12. In a machine for rolling the longitudinal joint of a boiler and in combination with a reciprocating mandrel, a disk 2 having pins 8 thereon and rollers 3 journaled thereto, an eccentric spindle ton which said disk is ournaled, a hook 7 arrangedto engage with said pins, a lever 6 fixed to the spindle of saidv hook, and an arm 5 fixed to the eccentric spindle and arranged to act on the said lever 6, substantially as and for the purpose specified.

13. In a machine for rolling the joint of a boiler, means for supporting and reciprocating said boiler, a spindle journaled in asuitable casing and havingan eccentricportlon, a disk 2 journaled on said eccentric portion, a swaging roller supported by said disk, a ratchet wheel 9 fixed to said spindle,and a pawl acting on said ratchet wheel,:in combination with mechanism for operating said pawl, thereby operating the .ratchet .wheel, substantially asdescribed.

14. In a machinefor rolling-the jointof a boiler, means for.supporting and reciprocating the boiler,a spindle 4. :jonrnaledaina-suitablecasing and havingan eccentric portion, a disk 2 journaled on saideccentricportion, a swaging roller supported :by said .disk, a ratchet wheel 9 fixed to saidspindleand provided with teeth of different size, andapawl acting on saidratchetwheehin combination with mechanism for operating .said pawl, thereby operating said ratchet wheel,substantially as described.

15. Thecombination with .a .reciprocating mandrel and theswagingrollerofa machine for rollingrboilerjoints, of a-spindle 4.narryin g said roller and eccentricallyjonrnaledin asuitable casing, an arm .fixedtosaid spindle,:and abraketarranged between said;arm and said casing,substantially.as and:for.the purposespecified.

16. In a machine for rolling thelongitudinal joint of a boiler, a mandrel, a longitudinal slot therein to receive a stripiw,andi.pins:23 inserted'in said mandrel, in combination-with a cam-faced bar Ztarranged to actagainst said pins, substantiallyasand -forth.e purpose specified.

Toronto, March 26, 1892.

.WALDER SQSIIIPE.

In presence of A. M. NEFF, J. EDW. MAYBEE. 

